Aluminum row welding fixing device

Abstract

The utility model provides an aluminum row welding and fixing device, relates to the technical field of battery production equipment, and aims to solve the problems of fixing and pressing an aluminum row during welding of a square battery cell connecting aluminum row of a side surface pole column to a certain extent. The utility model provides an aluminum bar welding and fixing device which is used for welding and positioning an aluminum bar and a pole of a battery cell module and comprises a pressing mechanism and a positioning plate, the pressing mechanism is rotationally connected with the positioning plate, the positioning plate is connected with the side part of the battery cell module, a positioning hole is formed in the position, corresponding to the guide part of the aluminum bar, of the positioning plate, and the guide part can penetrate through the positioning hole, so that the aluminum bar is connected with the positioning hole; and the pressing mechanism rotates relative to the positioning plate, so that the pressing end of the pressing mechanism can push and press the aluminum bar, and the aluminum bar is attached to the pole of the battery cell module.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to an aluminum bar welding and fixing device. Background Art

[0002] When installing and welding aluminum bars on square cells with poles on the side, the aluminum bars need to always fit the poles. At present, aluminum bars are basically installed by connecting multiple aluminum bars in series to weld the poles of multiple cells. This requires that the aluminum bars can always maintain a relative position with the corresponding poles. However, there is no corresponding positioning structure for the aluminum bars at present. Therefore, during operation, the aluminum bars and poles are often misaligned, resulting in unqualified products after welding.

[0003] Therefore, there is an urgent need to provide an aluminum bar welding fixture to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0004] The utility model aims to provide an aluminum bar welding fixing device, so as to solve the problem of fixing and pressing the aluminum bar when welding a square battery cell with a pole extending from the side.

[0005] The utility model provides an aluminum bar welding and fixing device, which is used for welding and positioning the aluminum bar and the pole of a battery module, and comprises a clamping mechanism and a positioning plate; the clamping mechanism is rotatably connected to the positioning plate, the positioning plate is connected to the side of the battery module, and a positioning hole is formed on the positioning plate at a position corresponding to the guide portion of the aluminum bar, the guide portion can pass through the positioning hole, so that the aluminum bar is connected to the positioning hole; the clamping mechanism rotates relative to the positioning plate, so that the clamping end of the clamping mechanism can push the aluminum bar, so that the aluminum bar and the pole of the battery module fit together.

[0006] The clamping mechanism comprises a mounting seat and a clamping assembly, the mounting seat is connected to the positioning plate, and one end of the clamping assembly is rotatably connected to the mounting seat.

[0007] Specifically, the clamping assembly includes a pulling member and a clamping member, one end of the pulling member is rotatably connected to the mounting seat, one end of the clamping member is connected to a clamping block, one end of the clamping member away from the clamping block is rotatably connected to the mounting seat, and a position of the clamping member close to the mounting seat is connected to a position of the pulling member close to the mounting seat. Pulling the pulling member can drive the clamping member to rotate relative to the mounting seat.

[0008] Furthermore, the pulling member includes a pulling part, a first connecting part and a second connecting part. There are two first connecting parts, and the two first connecting parts are in a "J" shape. One end of the first connecting part is connected to one end of the pulling part, and the other end is rotatably connected to the mounting seat. The two "J"-shaped first connecting parts are relatively arranged to form a positioning space. The second connecting part is located in the positioning space, and one end of the second connecting part is fixedly connected to one end of the first connecting part away from the mounting seat, and the other end is fixedly connected to the position of the clamping member close to the mounting seat.

[0009] Furthermore, the clamping member includes a connecting rod and an adjusting member, one end of the connecting rod is rotatably connected to the mounting seat, and the position of the connecting rod close to the mounting seat is fixedly connected to the second connecting part, the adjusting member is slidably connected to the connecting rod, and one end of the adjusting member is connected to the clamping block.

[0010] Among them, the connecting rod includes a third connecting part and a fourth connecting part, the third connecting part is U-shaped, and the open end is rotatably connected to the mounting seat, one end of the second connecting part is inserted into the U-shaped space of the third connecting part, and is fixedly connected to the third connecting part; the fourth connecting part is formed with an adjustment hole, and the adjustment hole extends along the length direction of the fourth connecting part, and the adjustment member passes through the adjustment hole and is slidably connected to the fourth connecting part.

[0011] Specifically, the adjusting member includes a first positioning portion, a second positioning portion and an adjusting rod portion. The adjusting rod portion is threadedly connected to the first positioning portion and the second positioning portion, and the first positioning portion and the second positioning portion are relatively arranged on both sides of the fourth connecting portion. The adjusting rod portion passes through the first positioning portion, the adjusting hole and the second positioning portion in sequence and is connected to the clamping block.

[0012] Furthermore, the aluminum bar welding and fixing device provided by the utility model also includes a fastener. An alignment hole is formed on the battery cell module, and a connecting hole is formed on the positioning plate at a position corresponding to the alignment hole. The fastener passes through the connecting hole and is connected to the alignment hole to connect the positioning plate to the battery cell module.

[0013] Furthermore, a positioning groove is formed on the aluminum bar at a position corresponding to the pole, and a positioning column is formed on a side of the pressing block facing the aluminum bar and at a position corresponding to the positioning groove.

[0014] Furthermore, a protrusion is formed at the middle position of the aluminum row, and an avoidance portion is formed at a position of the positioning plate corresponding to the protrusion.

[0015] Compared with the prior art, the aluminum bar welding and fixing device provided by the utility model has the following advantages:

[0016] The aluminum bar welding and fixing device provided by the utility model is used for welding and positioning the aluminum bar and the pole of the battery module, and comprises a clamping mechanism and a positioning plate; the clamping mechanism is rotatably connected to the positioning plate, the positioning plate is connected to the side of the battery module, and a positioning hole is formed on the positioning plate at a position corresponding to the guide portion of the aluminum bar, the guide portion can pass through the positioning hole, so that the aluminum bar is connected to the positioning hole; the clamping mechanism rotates relative to the positioning plate, so that the clamping end of the clamping mechanism can push the aluminum bar, so that the aluminum bar and the pole of the battery module fit together.

[0017] From this analysis, it can be seen that the positioning plate can provide a basis for the installation of the clamping mechanism, and since a guide portion is formed on the aluminum bar, the present application forms a positioning hole on the positioning plate at a position corresponding to the guide portion. When the aluminum bar needs to be positioned, the guide portion is passed through the positioning hole to achieve a detachable connection between the positioning plate and the aluminum bar. Since the clamping mechanism in the present application can rotate relative to the positioning plate, and the clamping end of the clamping mechanism can push the aluminum bar, the purpose of applying pressure to the aluminum bar against the pole of the battery module can be achieved through the clamping mechanism, thereby achieving stable positioning between the aluminum bar and the pole.

[0018] It is understandable that when the aluminum bar welding and fixing device provided by the present application is used, the aluminum bars are first connected in series, and then the guide part on the aluminum bar after the series connection is aligned with the positioning hole on the positioning plate, so that the guide part is inserted into the positioning hole, and then the positioning plate is connected to the battery module, so that the aluminum bar can fit with the pole of the battery module. Finally, the clamping mechanism is pulled so that the clamping end of the clamping mechanism abuts against the aluminum bar, thereby achieving pressure positioning of the aluminum bar, and then achieving stable welding between the aluminum bar and the pole by laser welding, thereby improving the reliability of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the overall structure of the aluminum bar welding and fixing device provided in an embodiment of the utility model;

[0021] Figure 2 An exploded schematic diagram of an aluminum bar welding and fixing device provided in an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the structure of a positioning plate and an aluminum bar in an aluminum bar welding and fixing device provided in an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of the structure of a clamping mechanism in an aluminum bar welding and fixing device provided in an embodiment of the utility model.

[0024] In the figure: 1-positioning plate; 101-positioning hole; 102-avoidance part; 103-connecting hole; 2-pressing mechanism; 201-pull part; 202-first connecting part; 203-second connecting part; 204-third connecting part; 205-fourth connecting part; 2051-adjusting hole; 206-first positioning part; 207-second positioning part; 208-adjusting rod; 209-mounting seat; 3-pressing block; 301-positioning column; 4-battery cell module; 401-pole; 402-alignment hole; 5-aluminum bar; 501-guide part; 502-positioning groove; 503-protrusion. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0030] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0031] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0032] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0033] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.

[0034] like Figure 1-Figure 3As shown, the utility model provides an aluminum bar 5 welding and fixing device, which is used for welding and positioning the aluminum bar 5 and the pole 401 of the battery module 4, and includes a clamping mechanism 2 and a positioning plate 1; the clamping mechanism 2 is rotatably connected to the positioning plate 1, the positioning plate 1 is connected to the side of the battery module 4, and the positioning plate 1 is formed with a positioning hole 101 at a position corresponding to the guide portion 501 of the aluminum bar 5, and the guide portion 501 can pass through the positioning hole 101 to connect the aluminum bar 5 with the positioning hole 101; the clamping mechanism 2 rotates relative to the positioning plate 1, so that the clamping end of the clamping mechanism 2 can push the aluminum bar 5, so that the aluminum bar 5 and the pole 401 of the battery module 4 fit together.

[0035] Compared with the prior art, the aluminum bar 5 welding and fixing device provided by the utility model has the following advantages:

[0036] The aluminum bar 5 welding and fixing device provided by the utility model can provide a basis for the installation of the clamping mechanism 2 through the positioning plate 1, and since the aluminum bar 5 is formed with a guide portion 501, the present application forms a positioning hole 101 at a position corresponding to the guide portion 501 on the positioning plate 1, and when the aluminum bar 5 needs to be positioned, the guide portion 501 is passed through the positioning hole 101, so that the detachable connection between the positioning plate 1 and the aluminum bar 5 can be achieved. Since the clamping mechanism 2 in the present application can rotate relative to the positioning plate 1, and the clamping end of the clamping mechanism 2 can push the aluminum bar 5, the purpose of applying pressure to the aluminum bar 5 against the pole 401 of the battery module 4 can be achieved through the clamping mechanism 2, thereby achieving stable positioning between the aluminum bar 5 and the pole 401.

[0037] It is understandable that when the aluminum bar 5 welding and fixing device provided by the present application is used, the aluminum bar 5 is first connected in series, and then the guide part 501 on the aluminum bar 5 after the series connection is aligned with the positioning hole 101 on the positioning plate 1, so that the guide part 501 is inserted into the positioning hole 101, and then the positioning plate 1 is connected to the battery module 4, so that the aluminum bar 5 can be fitted with the pole 401 of the battery module 4. Finally, the clamping mechanism 2 is pulled so that the clamping end of the clamping mechanism 2 is in contact with the aluminum bar 5, so as to realize the pressure positioning of the aluminum bar 5, and then the stable welding between the aluminum bar 5 and the pole 401 is realized by laser welding, thereby improving the reliability of welding.

[0038] Alternatively, if Figure 1 Combination Figure 4 As shown, the clamping mechanism 2 in the present application includes a mounting seat 209 and a clamping assembly. The mounting seat 209 is connected to the positioning plate 1 , and one end of the clamping assembly is rotatably connected to the mounting seat 209 .

[0039] The mounting seat 209 can increase the contact area between the clamping assembly and the positioning plate 1, and the mounting seat 209 can make it easier to connect the clamping assembly to the positioning plate 1. In addition, since the mounting seat 209 in the present application is a T-shaped structure, after the clamping assembly is connected to the mounting seat 209, there is a certain setting interval between the clamping assembly and the positioning plate 1, so that the clamping assembly can be rotated relative to the mounting seat 209 or the positioning plate 1.

[0040] It should be additionally explained here that in the present application, the clamping assembly and the mounting seat 209 can be rotatably connected via a connecting structure such as a pin.

[0041] Alternatively, if Figure 4 As shown, the clamping assembly in the present application includes a pulling member and a clamping member, one end of the pulling member is rotatably connected to the mounting seat 209, one end of the clamping member is connected to the clamping block 3, the end of the clamping member away from the clamping block 3 is rotatably connected to the mounting seat 209, and the position of the clamping member close to the mounting seat 209 is connected to the position of the pulling member close to the mounting seat 209, and pulling the pulling member can drive the clamping member to rotate relative to the mounting seat 209.

[0042] Preferably, the pulling member and the clamping member in the present application are arranged perpendicular to each other, and when the clamping block 3 clamps the aluminum row 5, the clamping member extends in the vertical direction, and correspondingly, the pulling member extends in the horizontal direction, thereby making the clamping assembly more regular and easy to operate.

[0043] It can be understood that during operation, the operator operates the pulling member. Since the pulling member is rotatably connected to the mounting seat 209, and the clamping member is connected to the pulling member, when the pulling member rotates relative to the mounting seat 209, it can drive the clamping member to rotate relative to the mounting seat 209, and then drive the clamping block 3 to move in the direction close to the aluminum row 5 until it abuts against the aluminum row 5, thereby completing the positioning of the aluminum row 5.

[0044] It should be noted that the rotational connection between the pull member and the mounting seat 209 in the present application can be an interference fit, which can not only realize the rotation of the pull member relative to the mounting seat 209, but also have a certain degree of pre-tightening force, so that the pull member can be kept at any angle. In addition, the pre-tightening force can also ensure that the pressing block 3 stably applies pressure to the aluminum bar 5, avoiding the problem of the aluminum bar 5 moving.

[0045] Alternatively, if Figure 4As shown, the pulling member in the present application includes a pulling part 201, a first connecting part 202 and a second connecting part 203, there are two first connecting parts 202, and the two first connecting parts 202 are in a "J" shape structure, one end of the first connecting part 202 is connected to one end of the pulling part 201, and the other end is rotatably connected to the mounting seat 209, and the two "J"-shaped first connecting parts 202 are relatively arranged to form a positioning space, the second connecting part 203 is located in the positioning space, and one end of the second connecting part 203 is fixedly connected to one end of the first connecting part 202 away from the mounting seat 209, and the other end is fixedly connected to the position of the clamping member close to the mounting seat 209.

[0046] The two first connection parts 202 arranged opposite to each other in a "X" shape can form a positioning space, which can avoid the third connection part 204 described below on the one hand, and provide a basis for the arrangement of the second connection part 203 on the other hand.

[0047] It can be understood that the pull part 201 in the present application is used for hand-held operation by an operator, and the first connection part 202 and the pull part 201 are an integrated structure, and the end of the first connection part 202 away from the pull part 201 is rotatably connected to the mounting seat 209. The second connection part 203 further provided can provide a basis for the connection between the pressing member and the pull member.

[0048] Accordingly, if Figure 4 As shown, the clamping member in the present application includes a connecting rod and an adjusting member, one end of the connecting rod is rotatably connected to the mounting seat 209, and the position of the connecting rod close to the mounting seat 209 is fixedly connected to the second connecting part 203, the adjusting member is slidably connected to the connecting rod, and one end of the adjusting member is connected to the clamping block 3.

[0049] The connecting rod can be used to achieve a rotational connection with the mounting seat 209, and at the same time can be used to achieve a fixed connection with the pulling member. Since the connecting rod is rotationally connected to the mounting seat 209, and the position close to the mounting seat 209 is fixedly connected to the second connecting portion 203, when the pulling member rotates relative to the mounting seat 209, it can drive the connecting rod to rotate together, thereby driving the clamping block 3 to move toward or away from the aluminum row 5.

[0050] Since the positions of different battery cell poles 401 may be slightly different during actual operation, the position of the aluminum bar 5 may change accordingly. Therefore, an adjusting member is provided on the connecting rod, and the adjusting member is slidably connected to the connecting rod. Since the adjusting member can slide along the extension direction of the connecting rod, the horizontal height position of the clamping block 3 can be adjusted, so as to better adapt to the change of the position of the aluminum bar 5 and ensure the positioning capability of the aluminum bar 5 and the adaptability of the overall device.

[0051] Alternatively, if Figure 4As shown, the connecting rod in the present application includes a third connecting part 204 and a fourth connecting part 205, the third connecting part 204 is U-shaped, and the open end is rotatably connected to the mounting seat 209, one end of the second connecting part 203 is inserted into the U-shaped space of the third connecting part 204, and is fixedly connected to the third connecting part 204; the fourth connecting part 205 is formed with an adjustment hole 2051, and the adjustment hole 2051 extends along the length direction of the fourth connecting part 205, and the adjustment member passes through the adjustment hole 2051 and is slidably connected to the fourth connecting part 205.

[0052] The U-shaped third connecting portion 204 can allow the second connecting portion 203 to pass through, thereby achieving a fixed connection between the third connecting portion 204 and the second connecting portion 203. In addition, since the position of the mounting seat 209 in the present application for installing the pulling member and the clamping member is a sheet-like structure, the U-shaped third connecting portion 204 can make the connection between the connecting rod and the mounting seat 209 more stable and the force more uniform.

[0053] By forming an adjustment hole 2051 extending along the length direction of the fourth connecting part 205 in the fourth connecting part 205, and passing one end of the adjusting member through the adjusting hole 2051 to be connected with the clamping block 3, when adjustment is needed, the horizontal height position of the clamping block 3 can be adjusted by moving the adjusting member in the adjusting hole 2051, thereby adapting to the aluminum bars 5 in different positions.

[0054] It is necessary to add that, if Figure 4 As shown, the adjustment hole 2051 in the present application is a long waist-shaped hole, so as to meet the movement of the adjustment member.

[0055] Alternatively, if Figure 4 As shown, the adjusting member in the present application includes a first positioning portion 206, a second positioning portion 207 and an adjusting rod 208, the adjusting rod 208 is threadedly connected to the first positioning portion 206 and the second positioning portion 207, and the first positioning portion 206 and the second positioning portion 207 are relatively arranged on both sides of the fourth connecting portion 205, and the adjusting rod 208 passes through the first positioning portion 206, the adjusting hole 2051 and the second positioning portion 207 in sequence to be connected to the clamping block 3.

[0056] Since the first positioning portion 206 and the second positioning portion 207 in the present application are connected to the adjustment rod portion 208 by threads, rotating the first positioning portion 206 and the second positioning portion 207 can enable the two to move toward or away from each other, thereby making the positions of the adjustment member and the connecting rod adjustable and able to remain in the corresponding positions after adjustment.

[0057] Optionally, the aluminum bar 5 welding and fixing device provided by the utility model also includes a fastener, an alignment hole 402 is formed on the battery cell module 4, a connecting hole 103 is formed on the positioning plate 1 at a position corresponding to the alignment hole 402, and the fastener passes through the connecting hole 103 and is connected to the alignment hole 402, so that the positioning plate 1 is connected to the battery cell module 4.

[0058] The fasteners in the present application are bolts, which can realize a detachable connection between the positioning plate 1 and the battery cell module 4. After the welding of the aluminum bar 5 is completed, the fasteners are removed to realize the separation of the positioning plate 1 and the battery cell module 4.

[0059] It should be noted here that usually poles 401 are formed on both sides of the battery cell module 4, and the aluminum bar 5 needs to be connected accordingly. Therefore, there are two sets of welding and fixing devices for the aluminum bar 5 in the present application, which are relatively arranged on both sides of the battery cell module 4. Their structure, installation method and clamping method are the same and will not be repeated here.

[0060] Alternatively, if Figure 3 As shown, a positioning groove 502 is formed on the aluminum bar 5 in the present application at a position corresponding to the pole 401 , and a positioning column 301 is formed on the side of the pressing block 3 facing the aluminum bar 5 and at a position corresponding to the positioning groove 502 .

[0061] Through the positioning groove 502 formed on the aluminum bar 5, the clamping block 3 in the present application forms a positioning column 301, and the positioning column 301 is embedded in the positioning groove 502 to achieve the position fixation between the clamping block 3 and the aluminum bar 5.

[0062] Alternatively, if Figure 3 As shown, a protrusion 503 is formed at the middle position of the aluminum row 5 in the present application, and an avoidance portion 102 is formed at a position of the positioning plate 1 corresponding to the protrusion 503 .

[0063] Since the aluminum bars 5 are all provided with protrusions 503 in the middle, the present application forms an avoidance portion 102 on the positioning plate 1 , so that the positioning plate 1 and the aluminum bars 5 can be more closely fitted together and the alignment accuracy can be ensured.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aluminum bar welding fixture, used for welding and positioning the aluminum bar and the pole of the battery module, characterized in that: It includes a clamping mechanism and a positioning plate; The clamping mechanism is rotatably connected to the positioning plate, the positioning plate is connected to the side of the battery module, and the positioning plate is formed with a positioning hole at a position corresponding to the guide portion of the aluminum bar, and the guide portion can pass through the positioning hole to connect the aluminum bar with the positioning hole; The clamping mechanism rotates relative to the positioning plate, so that the clamping end of the clamping mechanism can push the aluminum bar, so that the aluminum bar fits with the pole of the battery module.

2. The aluminum bar welding and fixing device according to claim 1 is characterized in that: The clamping mechanism comprises a mounting seat and a clamping assembly, wherein the mounting seat is connected to the positioning plate, and one end of the clamping assembly is rotatably connected to the mounting seat.

3. The aluminum bar welding and fixing device according to claim 2 is characterized in that: The clamping assembly includes a pulling member and a clamping member, one end of the pulling member is rotatably connected to the mounting seat, one end of the clamping member is connected to a clamping block, one end of the clamping member away from the clamping block is rotatably connected to the mounting seat, and a position of the clamping member close to the mounting seat is connected to a position of the pulling member close to the mounting seat, and pulling the pulling member can drive the clamping member to rotate relative to the mounting seat.

4. The aluminum bar welding and fixing device according to claim 3 is characterized in that: The pulling member includes a pulling part, a first connecting part and a second connecting part. There are two first connecting parts, and the two first connecting parts are in an "X" shape. One end of the first connecting part is connected to one end of the pulling part, and the other end is rotatably connected to the mounting seat. The two first connecting parts in an "X" shape are relatively arranged to form a positioning space. The second connecting part is located in the positioning space, and one end of the second connecting part is fixedly connected to one end of the first connecting part away from the mounting seat, and the other end is fixedly connected to the position of the clamping member close to the mounting seat.

5. The aluminum bar welding and fixing device according to claim 4 is characterized in that: The clamping member includes a connecting rod and an adjusting member, one end of the connecting rod is rotatably connected to the mounting seat, and the position of the connecting rod close to the mounting seat is fixedly connected to the second connecting portion, the adjusting member is slidably connected to the connecting rod, and one end of the adjusting member is connected to the clamping block.

6. The aluminum bar welding and fixing device according to claim 5, characterized in that: The connecting rod includes a third connecting part and a fourth connecting part, the third connecting part is U-shaped, and the open end is rotatably connected to the mounting seat, and one end of the second connecting part is inserted into the U-shaped space of the third connecting part and is fixedly connected to the third connecting part; The fourth connecting portion is formed with an adjustment hole, and the adjustment hole extends along the length direction of the fourth connecting portion, and the adjustment member passes through the adjustment hole and is slidably connected with the fourth connecting portion.

7. The aluminum bar welding and fixing device according to claim 6, characterized in that: The adjusting member includes a first positioning portion, a second positioning portion and an adjusting rod portion, the adjusting rod portion is threadedly connected to the first positioning portion and the second positioning portion, and the first positioning portion and the second positioning portion are relatively arranged on both sides of the fourth connecting portion, and the adjusting rod portion passes through the first positioning portion, the adjusting hole and the second positioning portion in sequence and is connected to the clamping block.

8. The aluminum bar welding and fixing device according to claim 1, characterized in that: It also includes a fastener, an alignment hole is formed on the battery cell module, a connecting hole is formed on the positioning plate at a position corresponding to the alignment hole, and the fastener passes through the connecting hole and is connected to the alignment hole to connect the positioning plate to the battery cell module.

9. The aluminum bar welding and fixing device according to claim 3, characterized in that: A positioning groove is formed on the aluminum bar at a position corresponding to the pole, and a positioning column is formed on the pressing block at a side facing the aluminum bar and at a position corresponding to the positioning groove.

10. The aluminum bar welding and fixing device according to claim 1, characterized in that: A protrusion is formed at the middle position of the aluminum row, and a avoiding portion is formed at a position of the positioning plate corresponding to the protrusion.

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